* if hvm better than pv?why dd in hvm vm no larger than 50M, while pv greater than 50
@ 2011-04-23 7:47 yue
2011-04-25 13:36 ` Konrad Rzeszutek Wilk
2011-04-26 8:48 ` yue
0 siblings, 2 replies; 4+ messages in thread
From: yue @ 2011-04-23 7:47 UTC (permalink / raw)
To: xen-devel
[-- Attachment #1.1: Type: text/plain, Size: 97 bytes --]
1.if passthrough pci is default in hvm? pv disk throughput better than hvm,using dd test
thanks
[-- Attachment #1.2: Type: text/html, Size: 357 bytes --]
[-- Attachment #2: Type: text/plain, Size: 138 bytes --]
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: if hvm better than pv?why dd in hvm vm no larger than 50M, while pv greater than 50
2011-04-23 7:47 if hvm better than pv?why dd in hvm vm no larger than 50M, while pv greater than 50 yue
@ 2011-04-25 13:36 ` Konrad Rzeszutek Wilk
2011-04-26 8:48 ` yue
1 sibling, 0 replies; 4+ messages in thread
From: Konrad Rzeszutek Wilk @ 2011-04-25 13:36 UTC (permalink / raw)
To: yue; +Cc: xen-devel
On Sat, Apr 23, 2011 at 03:47:23PM +0800, yue wrote:
> 1.if passthrough pci is default in hvm? pv disk throughput better than hvm,using dd test
> thanks
Please write your question more clearly. I am having a hard time understanding what it
is that you are asking.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re:Re: if hvm better than pv?why dd in hvm vm no larger than 50M, while pv greater than 50
2011-04-23 7:47 if hvm better than pv?why dd in hvm vm no larger than 50M, while pv greater than 50 yue
2011-04-25 13:36 ` Konrad Rzeszutek Wilk
@ 2011-04-26 8:48 ` yue
2011-04-26 13:54 ` Konrad Rzeszutek Wilk
1 sibling, 1 reply; 4+ messages in thread
From: yue @ 2011-04-26 8:48 UTC (permalink / raw)
To: Konrad Rzeszutek Wilk; +Cc: xen-devel
[-- Attachment #1.1: Type: text/plain, Size: 714 bytes --]
1.i find pv disk'throughput is better than hvm. i want to know why?
2.pci passthrough is said to improve performance, if it is default method of IO-process.
3.do you familar with ocfs2's source code?
thanks
At 2011-04-25 21:36:04，"Konrad Rzeszutek Wilk" <konrad.wilk@oracle.com> wrote:
>On Sat, Apr 23, 2011 at 03:47:23PM +0800, yue wrote:
>> 1.if passthrough pci is default in hvm? pv disk throughput better than hvm,using dd test
>> thanks
>
>Please write your question more clearly. I am having a hard time understanding what it
>is that you are asking.
>
>_______________________________________________
>Xen-devel mailing list
>Xen-devel@lists.xensource.com
>http://lists.xensource.com/xen-devel
[-- Attachment #1.2: Type: text/html, Size: 1367 bytes --]
[-- Attachment #2: Type: text/plain, Size: 138 bytes --]
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Re: if hvm better than pv?why dd in hvm vm no larger than 50M, while pv greater than 50
2011-04-26 8:48 ` yue
@ 2011-04-26 13:54 ` Konrad Rzeszutek Wilk
0 siblings, 0 replies; 4+ messages in thread
From: Konrad Rzeszutek Wilk @ 2011-04-26 13:54 UTC (permalink / raw)
To: yue; +Cc: xen-devel
On Tue, Apr 26, 2011 at 04:48:31PM +0800, yue wrote:
> 1.i find pv disk'throughput is better than hvm. i want to know why?
Pick up "The definitive guide to the Xen hypervisor" book.
> 2.pci passthrough is said to improve performance, if it is default method of IO-process.
Sure. But it also makes migration difficult.
> 3.do you familar with ocfs2's source code?
No.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2011-04-26 13:54 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2011-04-23 7:47 if hvm better than pv?why dd in hvm vm no larger than 50M, while pv greater than 50 yue
2011-04-25 13:36 ` Konrad Rzeszutek Wilk
2011-04-26 8:48 ` yue
2011-04-26 13:54 ` Konrad Rzeszutek Wilk
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).